Using 240fps HEVC file as 24fps slow motion in Hitfilm Express
I'm using Hitfilm Express 8 and I would like to import HEVC encoded 240fps footage from the GoPro Hero 6 and use it as 24fps slow motion. If I understand correctly, Hitfilm does not support neither HEVC or 240fps so I'm trying to find a way to convert the file to 24fps in some suitable format before importing into Hitfilm. Just to be clear, I only want to change the fps from 240fps to 24fps. I want to keep all the frames and thus making the clip 10 times longer.
but Hitfilm does not import the output file from Handbrake correctly. It is imported as 60fps in Hitfilm but I can see in Windows File Explorer and for example VLC Media Player that it truly is 240 fps. Also, the Handbrake output file is H264 which is not very good for editing.
Any help would be appreciated